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  • marsh
    marsh
    noun
    a tract of low wet land, often treeless and periodically inundated, generally characterized by a growth of grasses, sedges, cattails, and rushes.
  • Marsh
    Marsh
    noun
    Dame (Edith) Ngaio 1899–1982, New Zealand writer of detective novels.
Synonyms

marsh

1 American  
[mahrsh] / mɑrʃ /

noun

marshes plural
  1. a tract of low wet land, often treeless and periodically inundated, generally characterized by a growth of grasses, sedges, cattails, and rushes.

    Synonyms:
    wetland, marshland, fen, bog, swamp

Marsh 2 American  
[mahrsh] / mɑrʃ /

noun

  1. Dame (Edith) Ngaio 1899–1982, New Zealand writer of detective novels.

  2. Reginald, 1898–1954, U.S. painter and illustrator.


marsh 1 British  
/ mɑːʃ /

noun

  1. low poorly drained land that is sometimes flooded and often lies at the edge of lakes, streams, etc Compare swamp

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Marsh 2 British  
/ mɑːʃ /

noun

  1. Dame ( Edith ) Ngaio (ˈnaɪəʊ). 1899–1981, New Zealand crime writer, living in Britain (from 1928). Her many detective novels include Final Curtain (1947) and Last Ditch (1977)

  2. Rodney ( William ). born 1947, Australian cricketer: a wicketkeeper, he took 355 dismissals in 96 test matches (1970–84)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

marsh Scientific  
/ märsh /
  1. An area of low-lying wetland in which the level of water is generally shallow and often fluctuating. The water may be either standing or slow-moving. The water in a marsh is also more or less neutral or alkaline, in contrast to the water in a bog, which is acidic. The environment of a marsh is in general well-oxygenated and nutrient-rich and allows a great variety of organisms to flourish. In contrast to a swamp, in which there is an abundance of woody plants, the plants in a marsh are mostly herbaceous. Reeds and rushes dominate the vegetation of marshes.

  2. See also salt marsh


Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of marsh

before 900; Middle English mershe, Old English mer ( i ) sc (cognate with German Marsch ). See mere 2, -ish 1; cf. marais, marish, morass

Explanation

A marsh is an area in transition from land to water. It is a very bad idea to go walking in a marsh in your best shoes; try some fishing boots, or perhaps a boat. The word marsh comes from the old Dutch word mere, for sea, and it means land that is sea-ish… not sea, but sea-ish, like most of Holland. Marshes can be found often where a river empties into the sea, or along the side of a low, flooded river. Another word for marsh is swamp. If you’re in trouble or just want to be alone, a marsh is a great place to hide: no one will follow you. Just don’t forget your galoshes.

Keep Reading on Vocabulary.com

Vocabulary lists containing marsh

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Environmentalists say the wall will accelerate erosion elsewhere while starving the neighboring salt marsh of sediment, hurting wildlife.

From The Wall Street Journal Jul. 8, 2026

The project draws upon the group's Hop of Hope citizen rewilding programme, which has helped restore more than 8,000 large marsh grasshoppers to wetlands in Norfolk and Cambridgeshire since 2018.

From BBC Jun. 15, 2026

Areas of salt marsh and marsh grazing like Farlington are incredibly important and rare habitat in the south of England.

From BBC Jun. 4, 2026

She said it would previously have been a "lush salt marsh" full of plants which would have attracted animals and, in turn, humans - possibly for fishing or hunting.

From BBC Feb. 20, 2026

So, fast as I could, I flew down our path to the marsh.

From "Root Magic" by Eden Royce

Coroner Samantha Marsh returned an open conclusion after an inquest was unable to determine how he died.

From BBC Jul. 10, 2026

Although such premiums had narrowed considerably in recent days, if more incidents happen, they could increase again, said Marcus Baker, head of marine and cargo for insurance broker Marsh.

From MarketWatch Jun. 26, 2026

“Clearly, insurers like to know that the AIS is on,” said Marcus Baker, global head of marine and cargo at broker Marsh.

From The Wall Street Journal May 30, 2026

He used his fastball to get to two strikes, too, catching Marsh off guard with, as Wrobleski put it, “a modified, slide-step, out-of-the-windup fastball” off the plate.

From Los Angeles Times May 30, 2026

Bowen Marsh was waiting at a junction where four wormways met.

From "A Dance with Dragons" by George R. R. Martin

Saltwater is beginning to contaminate farmland reclaimed over the past five centuries from the delta marshes.

From Barron's Jun. 27, 2026

Development and hard infrastructure - in Farlington's case, the A27 - means there is nowhere for the marshes to retreat inland.

From BBC Jun. 4, 2026

Anacondas currently live in wetlands, marshes and major rivers including the Amazon.

From Science Daily Dec. 3, 2025

He owns Little Pecan, a private island in the Louisiana marshes and a hunting paradise.

From The Wall Street Journal Nov. 27, 2025

Hippos came ashore at night, but only in the marshes.

From "A Girl Named Disaster" by Nancy Farmer

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